Another site, another quote...
Now I'll give you a "freebie". Look for this sequence the next time you play. In a six deck shoe, for reasons I can't logically explain, when 2's and 3's come out of the shoe the Aces always seem to be very close by. You'll see them hit in three's in a group of twelve to fourteen cards. Is there a mathematical or scientific explanation? I do not know. I do know that as a casino manager I watched game after game after game of blackjack, usually three at a time, and at any given moment I could walk up to a table and tell you when the aces are coming. Drives the card counters nuts! Feel free to use this little hint to improve your odds and of course amaze your friends and remember to check out this page from time to time for more free tips and secrets from Ferro's Eye.
--http://www.blackjacksystem.com/tips.htm